Hey Dalton, I once hear a good definition of a Profession Engineer. .....It
is a guy who measures something to the nearest ten thousandth, marks it with
a piece of chalk and then cuts it with an ax!
Now why did I just think of that1
GJB, FoV
-----Original Message-----
From: Bill Dalton <billd13@essex1.com>
To: speckman@coredcs.com <speckman@coredcs.com>
Cc: Paul Fitzsimmons <fitzsmns@mwci.net>; team thicko
<team-thicko@Autox.Team.Net>; Bill Thompson <wsthompson@thicko.com>
Date: Friday, January 23, 1998 8:34 PM
Subject: Land Barge Math Help
>Gar,
>I have done some reconstructive math regarding this problem. The
>aforementioned 3mph is = to 4.4 feet per second (fps). If the land barge
>contacted the object in question at a speed of 4.4 fps, allowing for a
>reaction time of .75 seconds (a fairly good reaction time for all but
>dragster people who do it in about .4 of a second), before it was
>realized that some part of the land barge was not wanting to travel
>along at the same speed, with the rest of the vehicle, and the brakes
>were applied- the barge would have travelled 3.3 feet before the brakes
>were applied. Once the brakes were applied we could assume a linear
>deceleration from 4.4 fps to 0, which would make the average velocity of
>the land barge during decelleration = to a velocity of 2.2 fps. Putting
>these numbers into simultaneous equations relating speed, deceleration,
>and distance, it is my conclusion that, had the land barge been
>travelling at the claimed speed of 3 mph (4.4 fps) it would have
>traveled an addition distance of something less than 2 ft. This would
>make the total distance traveled 5.5 feet. Assuming 4 feet of extended
>damage due to buckling etc, the 18 feet would be reduced to 14 feet of
>contact- not likely possible at a speed of 3 mph.
>
>If we assume that the speed were 6 mph,(8.8 fps) the length of contact
>works out to be something between 2 and 3 feet making the length of
>contact about 9 ft. Closer but still not 14 feet.
>
>If we assume that the speed were 9 mph,(13.2 fps) the length of contact
>works out to be 13'-6"! Voila!!! Pretty close to the 14'.
>
>If I were called to testify in court as an expert witness, I would have
>to say that the land barge was traveling at a speed of approximately 9
>mph when the incident occurred.
>
>Fitz, what do you think?
>
>Gar, since you request help in getting to the truth of the matter, and
>my rate is $50/hour. The clock has been on for 1/2 hour resulting in a
>$25 charge. However, I do have a minimum billing of $50 to cover office
>expense and such, therefore a bill in the amount of $50 is being mailed
>today for services rendered.
>
>Bill D- away from the track also known as,
>William J Dalton PE
>IL Lic 62-039626
>
>See you in Tech
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